This six-minute anthem by Matthew Martin was commissioned by the Dean and Chapter of Westminster for a service held on 15th October 2019 to mark the 750th anniversary of the dedication of the Abbey Church of Henry III and first performed by the Choir of Westminster Abbey conducted by James O'Donnell with Peter Holder (organ). The piece sets Latin and English text - the Angularis fundamentum (Christ is the sure foundation) (Anon 7th century), translated by. John Mason Neale (1818-1866) / Joseph Armitage Robinson (1858-1933), Dean of Westminster 1902-11. The work is scored for mixed choir with divisi, and the organ part is typical of Martin's inimitable style.